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Goshia [24]
3 years ago
9

3n² - 9(7m³ + 7n²) pls help!!!

Mathematics
2 answers:
lidiya [134]3 years ago
7 0

Answer:

- 63m³ - 60n²

Step-by-step explanation:

Given

3n² - 9(7m³ + 7n²) ← distribute the parenthesis by 9

= 3n² - 63m³ - 63n² ← collect like terms

= - 63m³ - 60n²

sergeinik [125]3 years ago
3 0

Answer:

−63m3−60n2

ru simplifying?

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If x = 1 is a common root of ax² +ax + 2 = 0 and x² + x + b = 0 , then ab =
vodka [1.7K]

Answer:

ab = 2

Step-by-step explanation:

Given equations

ax² +ax + 2 = 0

x² + x + b = 0

root of both the equation

x= 1

then we can plug in x = 1 in both the equation

ax² +ax + 2 = 0                        x² + x + b = 0

a*1² +a*1 + 2 = 0                        1² + 1 + b = 0

a +a + 2 = 0                                 1 + 1 + b = 0

2a + 2 = 0                                    2 + b = 0

2a = -  2                                         b = -2

a = -2/2 = -1

Thus,

a = -1

b = -2

a*b = -1*-2 = 2

ab = 2

6 0
3 years ago
Find the coordinates of
alexira [117]

Answer:(6,-2)

Step-by-step explanation:

M is the midpoint of AB then ,

M = \frac{A+B}{2}

5=\frac{x+4}{2}     ,     -2=\frac{y-2}{2}

10=x+4  ,      -4=y-2

x=6          ,      y= -2

so, B= (6,-2)

3 0
2 years ago
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